Antiskid-chain hook



July 24, 1923.

G. B. N. Dow ET AL ANTIsKmA CHAIN Hoox Filed NOV. 21. 1922 @www flttozmgf Patented July 24, 1923.

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GEORGE B. N. DOW AND FRANK r.. HAM,A oi"MANCHESEE,l NEW HArirrsi'inE,A ASSIGNOBS To GEORGE J, CLARKE, oEvEsa.1 HANOVER', MASSACHUSETTS,

ANTIsKin-CHA'IN Hoon. i

l Application filed November 2,1', 1.922. 4Serial No. 602,370;y A- A' Chain Hook, of which the following is a4 specification.

This invention "relates to hooks for conio necting ends oi' chains o-r the like, and more particularly `for hooks used in connectingk the ends or' anti-skid chains. y

The object of the invention is the provision of a simple and efficient device of this character operable in a manner similar to a jack knife and in which it is impossible for the-device to become loose until manually operated to disengage the hook from the chain.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the com bination and arrangement ot parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed without departing from the spirit of the invention.

ln the accompanying drawings?.-

Figure l represents Aa side elevation O a hook constructed in accordance with this invention and shown applied and in operative closed position.

Fig. 2 is a similar view of the hook detached and shown in open position.

Fig. 3 is a transverse section takenon the line 3 3 of Fig. 1, and

Fig. 4 is a similar view 4f-4 of Fig. l.k e

In the embodiment illustrated, the hook constituting this invention comprises abody taken on the line member-1 similar to the body of a jack knife having a cooperating lock member 2 in the' form of a bladepivoted at 3f in a pocket formed in the body l. This blade 2 has a notch or recess 4 openingthrough the inner edge thereof and positioned adjacent its pivotal connection with the body. The body l has registering apertures 5 in the opposed walls of its blade receiving pocket and which are designed to register .with the notch 4 in the blade when the latter is in` closed position.

nected with the body l by passing said link through the registering apertures 5 with the link straddling the end .of the body and with which the recess 4 is designed to engage when the blade is in closed position.

The body l is pro-vided at its front end with an Lfshaped recess 6 to detachably receivea link ll at the vtree end of the chain, it being understood that the llink 410 yis permanently connected with the hook.- Thek short arm 7 of the recess 6 opens through the upper edge in which the blade receiving pocket 2a is formed as is shown clearly inv` Figs. l and 2. .vWhen the blade 2 has been closed as shown in Fig. l, the link 11 will be held engaged With'the hook body 1 and can not be removed until said blade is opened 'and which is held in-closed position by the strain exerted by the pull on chain link 10, the connection of which is in longitudinal 75 alinement with the pivotal' connection 3 of the blade.

A spring 8 is mounted in the edge of the body fl opposite the pocket therein and is designed to bear against the pivoted rear end of the v'blade 2 to hold it yieldably in closed position and to closey it after it has been opened.

To remove the chain from the hook, it is necessary to open the blade 2 sufficient to permit the link ll to pass out through the short arm 7 of the recess 6.

The security with which the ends of a chain may be removably connected together by this device makes the device practically adapted for juse' in positioning anti-skid chains on automobile wheels, although it is equally useful 'in connecting any kind of flexible elements. f

l. kA device of the class described com-` prising a body vmember having a'longitudinally extending pocket in one edge thereof and an outwardly yielding spring in the other edge, said body having an L-shaped recess at one end thereof with the short arm opening through said pocket and adapted .-to receive a chain link, a blade pivotally l lbody for the reception of a chain link whereby the blade -is held in closed position by the link when the device'is in use. i 1x10 A hook 'of the class'f'desorbed-comprising af linked body*inenrbe'rhavi'igf/y 'an 'La shaped recess in one end With the short arm I openingrthrough one edge of said body, said bod vhavirig-av pocket int the lrecessed edge thereof, a'blzide pivotaily mounted at one end in the end of the pocket oppositetothat having cheJ recess, said blade having a' notch in its inner edge adjacent the Walls o'said' natures.

FRANK P. HAM.

GEoRGE B. N. Dow. 

